The paper presented a special vehicle fuel cell diagnosis device which including control unit, fuel gas supply unit, power conditioning unit, cooling unit, and electric power consumer unit.
介绍了一种特殊的车载燃料电池诊断装置，该装置包括控制单元、燃料气体供给单元、电力调整单元、冷却单元和电力消耗单元。
Turn off air con: a car engine generates enough pollution without having to power an onboard air conditioning unit.
关上空调：一辆车就算不开随车空调，也已经产生足够的污染了。
In the image above, you will notice that the airplane is connected to ground power, ground air conditioning and a ground air-start unit.
在上图中，你会发现这架飞机地面电源相连，地面空调和地面空气启动装置。
DC air conditioning is simpler to install and more efficient than an AC unit, because you do not need an inverter and the waste of its roughly 85% power conversion effectiveness.
DC冷气系统安装更简单而且比起ac冷气系统更有效，因为你不需要变流器并且也不用浪费大约85%的能量转换效率。
DC air conditioning is simpler to install and more efficient than an AC unit, because you do not need an inverter and the waste of its roughly 85% power conversion effectiveness.
DC冷气系统安装更简单而且比起ac冷气系统更有效，因为你不需要变流器并且也不用浪费大约85%的能量转换效率。
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